| 
    Open CASCADE Technology 7.8.2.dev
    
   | 
 
#include <Standard.hxx>#include <Standard_Type.hxx>#include <StepBasic_SiUnit.hxx>#include <StepBasic_SiPrefix.hxx>#include <StepBasic_SiUnitName.hxx>Data Structures | |
| class | StepBasic_SiUnitAndLengthUnit |